def xiyiji(x, y):
    print('a')
    print('b: ', y)
    print('c: ', x)

xiyiji('d', 'e')
xiyiji('f', 'g')

def get_sum(x):
    total = 0
    for i in range(1, x+1):
        total += i
    print(total)
get_sum(100)
get_sum(200)

def cp(src_path, dest_path):
    with open(src_path, mode='rb') as fr:
        with open(dest_path, mode='wb') as fw:
            while True:
                data = fr.read(4096)
                if not data:
                    break
                fw.write(data)
cp('07.sh', '90.txt')